Soap or detergent tablet



FIG. 1 is a top front right perspective view of a soap or detergent tablet showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left end elevational view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a soap or detergent tablet, substantially as shown. 